If the country had the will, it could be paid down. But it would mean bringing industries back here so as many as possible could work and it would also mean freezing many gov programs (ie social security, medicare/medicaid/obamacare ) which would not be popular.
Or the government could nationalize the debt which will very likely happen following the coming financial collapse
How about ending all foreign aid immediately and making Hussein and the democrats account for the all of the stimulus money for starters.....